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Minimise printing in physmem - turns out serial output is SLOW.

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This commit is contained in:
Curle 2020-11-09 18:43:59 +00:00
parent c8c1af3961
commit 39c1956819
Signed by: TheCurle
GPG Key ID: 5942F13718443F79
1 changed files with 17 additions and 37 deletions
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52
chroma/system/memory/physmem.c
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@ -26,7 +26,7 @@
#define MIN_ORDER 3 #define MIN_ORDER 3
#define PEEK(type, address) (*((volatile type*)(address))) #define PEEK(type, address) (*((volatile type*)(address)))
uint8_t* Memory = ((uint8_t*)(&end)); uint8_t* Memory = ((uint8_t*)(&memstart));
uint8_t* MemoryStart; uint8_t* MemoryStart;
size_t MemoryBuckets; size_t MemoryBuckets;
@ -135,28 +135,28 @@ static directptr_t BuddyAllocate(buddy_t* Buddy, size_t Size) {
TicketAttemptLock(&Buddy->Lock); TicketAttemptLock(&Buddy->Lock);
SerialPrintf("Searching for a valid order to allocate into. Condition: {\r\n\tOrder: %d,\r\n\tSize: 0x%x\r\n}\r\n\n", InitialOrder, WantedSize); //SerialPrintf("Searching for a valid order to allocate into. Condition: {\r\n\tOrder: %d,\r\n\tSize: 0x%x\r\n}\r\n\n", InitialOrder, WantedSize);
for(int Order = InitialOrder; Order < Buddy->MaxOrder; Order++) { for(int Order = InitialOrder; Order < Buddy->MaxOrder; Order++) {
//SerialPrintf("\tCurrent Order: %d, Buddy entry: %x\r\n", Order, Buddy->List[Order - MIN_ORDER]); //SerialPrintf("\tCurrent Order: %d, Buddy entry: %x\r\n", Order, Buddy->List[Order - MIN_ORDER]);
if(Buddy->List[Order - MIN_ORDER] != 0) { if(Buddy->List[Order - MIN_ORDER] != 0) {
SerialPrintf("\tFound a valid Order!\r\n"); //SerialPrintf("\tFound a valid Order!\r\n");
directptr_t Address = Buddy->List[Order - MIN_ORDER]; directptr_t Address = Buddy->List[Order - MIN_ORDER];
Buddy->List[Order - MIN_ORDER] = PEEK(directptr_t, Address); Buddy->List[Order - MIN_ORDER] = PEEK(directptr_t, Address);
TicketUnlock(&Buddy->Lock); TicketUnlock(&Buddy->Lock);
size_t FoundSize = 1ull << Order; size_t FoundSize = 1ull << Order;
SerialPrintf("\tAdding area - Address 0x%p, Size 0x%x\r\n\n", Address, FoundSize); //SerialPrintf("\tAdding area - Address 0x%p, Size 0x%x\r\n\n", Address, FoundSize);
AddRangeToBuddy(Buddy, (void*)((size_t)Address + WantedSize), FoundSize - WantedSize); AddRangeToBuddy(Buddy, (void*)((size_t)Address + WantedSize), FoundSize - WantedSize);
SerialPrintf("\tArea added!\r\n\n"); //SerialPrintf("\tArea added!\r\n");
return Address; return Address;
} }
} }
SerialPrintf("BuddyAllocate: Unable to find a valid order to allocate!\r\nInitial Order: %d, WantedSize: 0x%x\r\n\r\n", InitialOrder, WantedSize); //SerialPrintf("BuddyAllocate: Unable to find a valid order to allocate!\r\nInitial Order: %d, WantedSize: 0x%x\r\n\r\n", InitialOrder, WantedSize);
TicketUnlock(&Buddy->Lock); TicketUnlock(&Buddy->Lock);
return NULL; return NULL;
@ -164,16 +164,14 @@ static directptr_t BuddyAllocate(buddy_t* Buddy, size_t Size) {
void InitMemoryManager() { void InitMemoryManager() {
size_t BootstructSize = bootldr.size; SerialPrintf("[ Mem] Counting memory..\r\n");
size_t BootstructLoc = (size_t) &bootldr;
size_t BootstructEnd = BootstructLoc + BootstructSize;
MemorySize = 0; MemorySize = 0;
size_t MemMapEntryCount = 0; size_t MemMapEntryCount = 0;
MMapEnt* MemMap = &bootldr.mmap; MMapEnt* MemMap = &bootldr.mmap;
while((size_t) MemMap < BootstructEnd) { while((size_t) MemMap < ((size_t) &bootldr) + bootldr.size) {
if(MMapEnt_IsFree(MemMap)) { if(MMapEnt_IsFree(MemMap)) {
MemorySize += MMapEnt_Size(MemMap); MemorySize += MMapEnt_Size(MemMap);
} }
@ -181,35 +179,17 @@ void InitMemoryManager() {
MemMap++; MemMap++;
} }
SerialPrintf("[ Mem] Counted %d entries in the memory map..\r\n", MemMapEntryCount);
MemoryPages = MemorySize / PAGE_SIZE; MemoryPages = MemorySize / PAGE_SIZE;
MemoryBuckets = MemoryPages / PAGES_PER_BUCKET;
if(MemoryBuckets * PAGES_PER_BUCKET < MemoryPages)
MemoryBuckets++; // Always round up
memset(Memory, 0, MemoryBuckets);
MemoryStart = (uint8_t*) PAGE_ALIGN((size_t)(Memory + MemoryBuckets));
SerialPrintf("Initializing Memory.\r\n");
SerialPrintf("%u MB of memory detected.\r\n", (MemorySize / 1024) / 1024);
for(size_t i = 0; i < MemoryBuckets; i++) {
if(Memory[i] != 0)
SerialPrintf("Memory at 0x%p is not empty!", Memory + i);
}
SerialPrintf("[ Mem] %u MB of memory detected.\r\n", (MemorySize / 1024) / 1024);
} }
void ListMemoryMap() { void ListMemoryMap() {
SerialPrintf("BIOS-Provided memory map:\r\n"); SerialPrintf("[ Mem] BIOS-Provided memory map:\r\n");
for(MMapEnt* MapEntry = &bootldr.mmap; (size_t)MapEntry < (size_t) &bootldr + bootldr.size; MapEntry++) { for(MMapEnt* MapEntry = &bootldr.mmap; (size_t)MapEntry < (size_t) &bootldr + bootldr.size; MapEntry++) {
@ -234,10 +214,10 @@ void ListMemoryMap() {
if(entry_from != 0 && entry_to != 0) if(entry_from != 0 && entry_to != 0)
SerialPrintf("[ mem 0x%p-0x%p] %s\r\n", entry_from, entry_to, EntryType); SerialPrintf("[ Mem] 0x%p-0x%p %s\r\n", entry_from, entry_to, EntryType);
if(MMapEnt_Type(MapEntry) == MMAP_FREE) { if(MMapEnt_Type(MapEntry) == MMAP_FREE) {
SerialPrintf("\tAdding this entry to the physical memory manager!\r\n"); SerialPrintf("[ Mem] Adding this entry to the physical memory manager!\r\n");
AddRangeToPhysMem((void*)((char*)(MMapEnt_Ptr(MapEntry) /* + DIRECT_REGION*/ )), MMapEnt_Size(MapEntry)); AddRangeToPhysMem((void*)((char*)(MMapEnt_Ptr(MapEntry) /* + DIRECT_REGION*/ )), MMapEnt_Size(MapEntry));
} }
@ -247,7 +227,7 @@ void ListMemoryMap() {
void AddRangeToPhysMem(directptr_t Base, size_t Size) { void AddRangeToPhysMem(directptr_t Base, size_t Size) {
if(Base < (void*)(LOWER_REGION + DIRECT_REGION)) { if(Base < (void*)(LOWER_REGION + DIRECT_REGION)) {
SerialPrintf("New range in lower memory: 0x%p, size 0x%x\r\n", Base, Size); SerialPrintf("[ Mem] New range in lower memory: 0x%p, size 0x%x\r\n", Base, Size);
AddRangeToBuddy(&LowBuddy, Base, Size); AddRangeToBuddy(&LowBuddy, Base, Size);
} else { } else {
if(HighBuddy.Base == NULL) { if(HighBuddy.Base == NULL) {
@ -273,12 +253,12 @@ directptr_t PhysAllocateMem(size_t Size) {
directptr_t Pointer = NULL; directptr_t Pointer = NULL;
if(HighBuddy.Base == 0) { if(HighBuddy.Base == 0) {
SerialPrintf("Attempting allocation into high memory.\n"); //SerialPrintf("Attempting allocation into high memory.\n");
Pointer = BuddyAllocate(&HighBuddy, Size); Pointer = BuddyAllocate(&HighBuddy, Size);
} }
if(Pointer == NULL) { if(Pointer == NULL) {
SerialPrintf("Attempting allocation into low memory.\n"); //SerialPrintf("Attempting allocation into low memory.\n");
Pointer = BuddyAllocate(&LowBuddy, Size); Pointer = BuddyAllocate(&LowBuddy, Size);
} }